When some cleaning agents are used, excess dosing can result in heavy foam formation since this effect is exaggerated even more by the whirl chamber nozzles.
- The foam can stick to the headlamp for some time, causing problems with the light distribution.
- For this reason care should always be taken to mix the water and cleaning agent to the right mixing ratio.
If the centrifugal pump does not work (noise can be clearly heard during normal operation) when the washing function has been activated, the voltage supply including the fuse must be checked.
If the water spray cone is only one-sided or extremely weak although the pump is working, this could be caused by the following:
Inverse polarity of the motor pump:
Check the polarity, since centrifugal pumps can work in both directions of rotation but with different hydraulic power.
System is not bled:
Bleed the system completely by activating the system several times without a break.
Hose is kinked or leaking:
Check the routing of the hose and change if necessary. Seal leaks and/or repair hose.
Nozzles or valves are blocked:
Remove foreign particles by rinsing the system.
Component parts are frozen up:
Increase amount of anti-freeze. Freezing will not damage the components, however.
If cleaning efficiency is still not as good as it should be, check the nozzle setting and/or set according to manufacturer's specifications.